DNA testing.
DNA testing.
  • Researchers published two new papers on the human Y chromosome. 
  • It's the final chromosome in the human genome that researchers hadn't fully sequenced. 
  • The new reference could help researchers better understand infertility and some types of cancer.

Decades ago, researchers referred to the human Y chromosome as a "functional wasteland," among other names.

A huge amount of its genome was unsequenced, and it was difficult to know how some of its protein-coding genes worked. But not anymore.

Two new papers, both published today in Nature, shed light on some of the Y chromosome's mysteries.